<template>
    <el-form>
        <el-form-item>
            <el-radio v-model='radioValue' :label="1">
                月，允许的通配符[, - * /]
            </el-radio>
        </el-form-item>

        <el-form-item>
            <el-radio v-model='radioValue' :label="2">
                周期从
                <el-input-number v-model='cycle01' :min="1" :max="11"/>
                -
                <el-input-number v-model='cycle02' :min="cycle01 + 1" :max="12"/>
                月
            </el-radio>
        </el-form-item>

        <el-form-item>
            <el-radio v-model='radioValue' :label="3">
                从
                <el-input-number v-model='average01' :min="1" :max="11"/>
                月开始，每
                <el-input-number v-model='average02' :min="1" :max="12 - average01"/>
                月月执行一次
            </el-radio>
        </el-form-item>

        <el-form-item>
            <el-radio v-model='radioValue' :label="4">
                指定
                <el-select clearable v-model="checkboxList" placeholder="可多选" multiple :multiple-limit="8">
                    <el-option v-for="item in monthList" :key="item.key" :label="item.value" :value="item.key"/>
                </el-select>
            </el-radio>
        </el-form-item>
    </el-form>
</template>

<script setup>
    const emit = defineEmits(['update'])
    const props = defineProps({
        cron: {
            type: Object,
            default: {
                second: "*",
                min: "*",
                hour: "*",
                day: "*",
                month: "*",
                week: "?",
                year: "",
            }
        },
        check: {
            type: Function,
            default: () => {
            }
        }
    })
    const radioValue = ref(1)
    const cycle01 = ref(1)
    const cycle02 = ref(2)
    const average01 = ref(1)
    const average02 = ref(1)
    const checkboxList = ref([])
    const checkCopy = ref([1])
    const monthList = ref([
        {key: 1, value: '一月'},
        {key: 2, value: '二月'},
        {key: 3, value: '三月'},
        {key: 4, value: '四月'},
        {key: 5, value: '五月'},
        {key: 6, value: '六月'},
        {key: 7, value: '七月'},
        {key: 8, value: '八月'},
        {key: 9, value: '九月'},
        {key: 10, value: '十月'},
        {key: 11, value: '十一月'},
        {key: 12, value: '十二月'}
    ])
    const cycleTotal = computed(() => {
        cycle01.value = props.check(cycle01.value, 1, 11)
        cycle02.value = props.check(cycle02.value, cycle01.value + 1, 12)
        return cycle01.value + '-' + cycle02.value
    })
    const averageTotal = computed(() => {
        average01.value = props.check(average01.value, 1, 11)
        average02.value = props.check(average02.value, 1, 12 - average01.value)
        return average01.value + '/' + average02.value
    })
    const checkboxString = computed(() => {
        return checkboxList.value.join(',')
    })
    watch(() => props.cron.month, value => changeRadioValue(value))
    watch([radioValue, cycleTotal, averageTotal, checkboxString], () => onRadioChange())

    function changeRadioValue(value) {
        if (value === '*') {
            radioValue.value = 1
        } else if (value.indexOf('-') > -1) {
            const indexArr = value.split('-')
            cycle01.value = Number(indexArr[0])
            cycle02.value = Number(indexArr[1])
            radioValue.value = 2
        } else if (value.indexOf('/') > -1) {
            const indexArr = value.split('/')
            average01.value = Number(indexArr[0])
            average02.value = Number(indexArr[1])
            radioValue.value = 3
        } else {
            checkboxList.value = [...new Set(value.split(',').map(item => Number(item)))]
            radioValue.value = 4
        }
    }

    function onRadioChange() {
        switch (radioValue.value) {
            case 1:
                emit('update', 'month', '*', 'month')
                break
            case 2:
                emit('update', 'month', cycleTotal.value, 'month')
                break
            case 3:
                emit('update', 'month', averageTotal.value, 'month')
                break
            case 4:
                if (checkboxList.value.length === 0) {
                    checkboxList.value.push(checkCopy.value[0])
                } else {
                    checkCopy.value = checkboxList.value
                }
                emit('update', 'month', checkboxString.value, 'month')
                break
        }
    }
</script>

<style lang="scss" scoped>
    .el-input-number--small, .el-select, .el-select--small {
        margin: 0 0.2rem;
    }

    .el-select, .el-select--small {
        width: 18.8rem;
    }
</style>